<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>

        p{
            /* letter-spacing: 20px; */
            letter-spacing: -2px;
        }
        div{
            /* letter-spacing: 10px; */
            word-spacing: 30px;
        }
    </style>
</head>
<body>
    <p>不凡学院bufan</p>
    <div>hello world</div>
</body>
</html>